diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 4b89ef8..aa5ab10 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.2.0
+current_version = 1.2.1
 commit = True
 tag = True
 
diff --git a/.github/workflows/conda_ci.yml b/.github/workflows/conda_ci.yml
index 4b61ee6..caa38d5 100644
--- a/.github/workflows/conda_ci.yml
+++ b/.github/workflows/conda_ci.yml
@@ -57,7 +57,7 @@ jobs:
 
       - name: "Install package"
         run: |
-          $CONDA/bin/conda install -c file://$(pwd)/conda-bld formate=1.2.0=py_1 -y || exit 1
+          $CONDA/bin/conda install -c file://$(pwd)/conda-bld formate=1.2.1=py_1 -y || exit 1
 
       - name: "Run Tests"
         run: |
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2d1ab3d..04cfd5b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -32,7 +32,7 @@ repos:
     - id: end-of-file-fixer
 
  - repo: https://github.com/domdfcoding/pre-commit-hooks
-   rev: v0.5.0
+   rev: v0.6.0
    hooks:
     - id: requirements-txt-sorter
       args:
@@ -80,12 +80,15 @@ repos:
     - id: snippet-fmt
 
  - repo: https://github.com/python-formate/formate
-   rev: v1.1.2
+   rev: v1.2.0
    hooks:
     - id: formate
       exclude: ^(doc-source/conf|__pkginfo__|setup)\.(_)?py$
       additional_dependencies:
        - formate-trailing-commas>=0.1.1
+      types_or:
+       - python
+       - pyi
 
  - repo: https://github.com/python-coincidence/dep_checker
    rev: v0.9.0
diff --git a/README.rst b/README.rst
index 1c707e5..85424d8 100644
--- a/README.rst
+++ b/README.rst
@@ -111,7 +111,7 @@ See `the documentation`_ for more information.
 .. |language| image:: https://img.shields.io/github/languages/top/python-formate/formate
 	:alt: GitHub top language
 
-.. |commits-since| image:: https://img.shields.io/github/commits-since/python-formate/formate/v1.2.0
+.. |commits-since| image:: https://img.shields.io/github/commits-since/python-formate/formate/v1.2.1
 	:target: https://github.com/python-formate/formate/pulse
 	:alt: GitHub commits since tagged version
 
diff --git a/doc-source/index.rst b/doc-source/index.rst
index 7b12567..498d5bf 100644
--- a/doc-source/index.rst
+++ b/doc-source/index.rst
@@ -112,7 +112,7 @@ formate
 		:alt: GitHub top language
 
 	.. |commits-since| github-shield::
-		:commits-since: v1.2.0
+		:commits-since: v1.2.1
 		:alt: GitHub commits since tagged version
 
 	.. |commits-latest| github-shield::
diff --git a/doc-source/requirements.txt b/doc-source/requirements.txt
index ee4fdc4..86109e5 100644
--- a/doc-source/requirements.txt
+++ b/doc-source/requirements.txt
@@ -7,6 +7,7 @@ furo==2021.06.18b36
 html-section>=0.3.0
 roman>=4.0
 seed-intersphinx-mapping>=1.2.2
+setuptools<81
 sphinx>=3.0.3
 sphinx-copybutton>=0.5.2
 sphinx-debuginfo>=0.2.2
diff --git a/doc-source/usage.rst b/doc-source/usage.rst
index 3ac46ab..e837a68 100644
--- a/doc-source/usage.rst
+++ b/doc-source/usage.rst
@@ -26,7 +26,7 @@ To do so, add the following to your
 `.pre-commit-config.yaml <https://pre-commit.com/#2-add-a-pre-commit-configuration>`_ file:
 
 .. pre-commit::
-	:rev: 1.2.0
+	:rev: 1.2.1
 	:hooks: formate
 	:args: --verbose
 
diff --git a/formate/__init__.py b/formate/__init__.py
index 3402b38..e9bdc77 100644
--- a/formate/__init__.py
+++ b/formate/__init__.py
@@ -50,7 +50,7 @@
 __author__: str = "Dominic Davis-Foster"
 __copyright__: str = "2020-2021 Dominic Davis-Foster"
 __license__: str = "MIT License"
-__version__: str = "1.2.0"
+__version__: str = "1.2.1"
 __email__: str = "dominic@davis-foster.co.uk"
 
 __all__ = ("call_hooks", "reformat_file", "Reformatter", "isort_hook", "yapf_hook")
@@ -255,18 +255,22 @@ class Reformatter:
 	.. autosummary-widths:: 5/16
 	"""
 
-	#: The filename being reformatted.
+	#: The filename being reformatted, as a POSIX-style path.
 	filename: str
 
-	#: The filename being reformatted, as a POSIX-style path.
+	#: The filename being reformatted, as a :class:`~.PathPlus` object.
 	file_to_format: PathPlus
 
+	#: The file extension of the file being reformatted.
+	filetype: str
+
 	#: The ``formate`` configuration, parsed from a TOML file (or similar).
 	config: FormateConfigDict
 
 	def __init__(self, filename: PathLike, config: FormateConfigDict):
 		self.file_to_format = PathPlus(filename)
 		self.filename = self.file_to_format.as_posix()
+		self.filetype = self.file_to_format.suffix
 		self.config = config
 		self._unformatted_source = self.file_to_format.read_text()
 		self._reformatted_source: Optional[str] = None
@@ -279,7 +283,7 @@ def run(self) -> bool:
 		"""
 
 		hooks = parse_hooks(self.config)
-		hooks = get_hooks_for_filetype(self.file_to_format.suffix, hooks)
+		hooks = get_hooks_for_filetype(self.filetype, hooks)
 		reformatted_source = StringList(call_hooks(hooks, self._unformatted_source, self.filename))
 		reformatted_source.blankline(ensure_single=True)
 
diff --git a/pyproject.toml b/pyproject.toml
index 6871ad0..da6f484 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "whey"
 
 [project]
 name = "formate"
-version = "1.2.0"
+version = "1.2.1"
 description = "Python formatting mate."
 readme = "README.rst"
 keywords = [ "formatting", "linting",]
diff --git a/repo_helper.yml b/repo_helper.yml
index 204f048..95477b0 100644
--- a/repo_helper.yml
+++ b/repo_helper.yml
@@ -6,7 +6,7 @@ author: 'Dominic Davis-Foster'
 email: 'dominic@davis-foster.co.uk'
 username: 'python-formate'
 assignee: 'domdfcoding'
-version: '1.2.0'
+version: '1.2.1'
 license: 'MIT'
 short_desc: 'Python formatting mate.'
 primary_conda_channel: "domdfcoding"
diff --git a/tox.ini b/tox.ini
index 855c26c..172facf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -41,7 +41,7 @@ requires =
     pip>=21,!=22.2
     tox-envlist>=0.2.1
     tox~=3.0
-    virtualenv!=20.16.0
+    virtualenv!=20.16.0,<20.39
 
 [envlists]
 test =